12999937 has 2 divisors, whose sum is σ = 12999938. Its totient is φ = 12999936.

The previous prime is 12999929. The next prime is 12999941. The reversal of 12999937 is 73999921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9461776 + 3538161 = 3076^2 + 1881^2 .

It is a cyclic number.

It is not a de Polignac number, because 12999937 - 2³ = 12999929 is a prime.

It is not a weakly prime, because it can be changed into another prime (12999947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6499968 + 6499969.

It is an arithmetic number, because the mean of its divisors is an integer number (6499969).

Almost surely, 2^12999937 is an apocalyptic number.

It is an amenable number.

12999937 is a deficient number, since it is larger than the sum of its proper divisors (1).

12999937 is an equidigital number, since it uses as much as digits as its factorization.

12999937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 275562, while the sum is 49.

The square root of 12999937 is about 3605.5425389253. The cubic root of 12999937 is about 235.1330889405.

It can be divided in two parts, 1299 and 9937, that added together give a square (11236 = 106²).

The spelling of 12999937 in words is "twelve million, nine hundred ninety-nine thousand, nine hundred thirty-seven".